This publication will introduce you to normal requirements for design of surface and subsurface drainage systems for residential, commercial, institutional and industrial areas. You will learn about predesign investigations, environmental considerations, hydrologic studies, hydraulic design considerations, erosion control and subsurface drainage. References and a bibliography are provided that will allow you to advance beyond this introductory course and begin to address area drainage issues or real projects in your company or agency. Here is what is discussed: 1. INTRODUCTION, 2. HYDROLOGY....